UWP 中的 ListView 控件是否有 IsSelected 属性

Question

如果是，我应该如何将可见性绑定到 ListViewItem 的 IsSelected 属性？

Answer 1

The ListViewItem class provides the container for items displayed in a ListView control. You populate the ListView by adding objects directly to its Items collection or by binding its ItemsSource property to a data source. When items are added to the ListView, a ListViewItem container is created automatically for each item in the collection.

更多信息，请参考Remark of the ListViewItem。

我们应该能够使用 SelectionChangedEventArgs.AddedItems 获取包含所选项目的列表。我们还可以使用 SelectionChangedEventArgs.RemovedItems 获取包含未选择的项目的列表。

我们可以在Class中定义IsSelected属性，Class应该继承INotifyPropertyChanged。在SelectionChanged事件中，我们可以将Selected Item和UnSelect Item设置为Item的IsSelected属性

例如：

public class Item : INotifyPropertyChanged
{
    private string _title;
    private bool _isSelected;

    public string Title
    {
        get { return _title; }
        set
        {
            _title = value;
            RaisePropertyChanged("Title");
        }
    }

    public bool IsSelected
    {
        get { return _isSelected; }
        set
        {
            _isSelected = value;
            RaisePropertyChanged("IsSelected");
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    protected void RaisePropertyChanged(string name)
    {
        if (PropertyChanged != null)
        {
            PropertyChanged(this, new PropertyChangedEventArgs(name));
        }
    }
}

然后我们可以在不转换类型的情况下将Visibility绑定到IsSelected。

例如：

<ListView Name="MyListView" SelectionChanged="MyListView_SelectionChanged">
    <ListView.ItemTemplate>
        <DataTemplate>
            <TextBlock  Text="{Binding Title}"  Visibility="{Binding IsSelected, Mode=OneWay}"></TextBlock>
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

背后的代码：

private ObservableCollection<Item> Items;

public MainPage()
{
    this.InitializeComponent();
    Items = new ObservableCollection<Item>();
    Items.Add(new Item());
    Items[0].Title = "Title1";
    Items.Add(new Item());
    Items[1].Title = "Title2";
    MyListView.ItemsSource = Items;
}

private void MyListView_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    foreach (Item item in e.RemovedItems)
    {
        item.IsSelected = false;
    }

    foreach (Item item in e.AddedItems)
    {
        item.IsSelected = true;
    }
}

UWP 中的 ListView 控件是否有 IsSelected 属性

Do the ListView Control have IsSelected Property in UWP

c#

listviewitem

uwp-xaml